Author Topic: Yet, another midline eyeknot  (Read 5862 times)

DDK

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Re: Yet, another midline eyeknot
« Reply #45 on: June 04, 2021, 01:35:30 PM »
@agent_smith

Nicely done.

Central Inversion Symmetry bends are my favorites.  I notice with some of these TIB Double Loops that the two loops "communicate" fairly easily as there is not much friction on the rope section that joins them.  I guess a salesman would call that a "feature".   ;)  The Thief Knot has a nice solution with seemingly less "communication".



 

DDK

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Re: Yet, another midline eyeknot
« Reply #46 on: June 04, 2021, 01:49:28 PM »
@tsik_lestat

Thank You.

agent_smith

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Re: Yet, another midline eyeknot
« Reply #47 on: June 04, 2021, 04:44:25 PM »
Just received from Master Xarax - via special instantaneous courier from Greece:

Quote
I like the general way DDK describes his method ? because I like methods, I guess !
This reminds me of a few other instances, where we had discussed something like that in the Forum.
1. Starting from a stopper, any stopper, and doubling the line ( i.e., following it with a second line, or just turning back the tail(s), and re-tracing the nub ), we can arrive at a symmetric bend ?based?, in a way, on this stopper ? and vice versa, of course. I have noticed that this procedure might had led to the Zeppelin bend in the first place. DDK now notices that something similar can lead, from a symmetric bend, any symmetric bend, to a double loop ?based? on this bend.
2. Replying to a solution to the midline-to-midline bend problem, offered by knot4u, I had noticed that : ?Due to their high symmetry, many of the TIB single or double loops are very interesting knots, and they can be used as bases for loops and bends, as you have noticed.?

https://igkt.net/sm/index.php?topic=3020.msg21724#msg21724
https://igkt.net/sm/index.php?topic=3020.msg21727#msg21727

DDK now reminds us that the exact opposite is also true.

Also this link: http://igkt.net/sm/index.php?topic=3020.msg21737#msg21737


...

And so it seems Xarax had been exploring these concepts at least as far back as 2012.
However, it seems he didn't figure out and present the TIB mid-line Zeppelin?
Although it is interesting, I find that it has a large footprint and isn't easy to tie (even after tying it multiple times, I still have to fiddle and think and fiddle...).
I don't think these type of knot structures will gain widespread popularity - and will likely remain in the realm of knotting enthusiasts!
« Last Edit: June 04, 2021, 04:47:34 PM by agent_smith »

Dan_Lehman

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Re: Yet, another midline eyeknot
« Reply #48 on: June 04, 2021, 06:53:56 PM »
A TIB Ashley's Bend (1452) Double Loop
IMO, this is better used qua "twin eyes",
the point being that if an eye is loaded in isolation,
it can collapse-contract the unloaded collar; but
with both eyes loaded (as one), that that collars
the then-effective SPart will not extend so much
and deny the other eye from doing so.


Yes, this is a neat way to doing such multi-eye
knots from some of our familiar ends joints.
(In a somewhat similar manner, one can form
single-eye knots from #1408, ..., but getting
an asymmetric knot (one side d/double, the
other single, collar(s)).


Thanks,
--dl*
====

tsik_lestat

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Re: Yet, another midline eyeknot
« Reply #49 on: June 05, 2021, 10:38:37 AM »
Indeed, Xarax and Dan_Lehman, had already shown through their constructive debates, that they had a firm grip on this double loop generator concept, advanced by DDK.

Relative quote by Xarax and Dan_Lehman.....

Quote
Quote from: Dan_Lehman on February 12, 2012, 05:15:14 AM

    One can, e.g., elaborate on Ashley #1408 & 1425 (and more) schemas, out of the *middle*, for interesting "twin-eye" knots --as I envision them (where the two eyes are roughly adjacent and used qua one, so to get assured behavior when loaded in either direction (as contrast w/e.g. the butterfly's asymmetry)).


That is something very interesting, which had not crossed my mind till now...We tie a symmetric bend - any symmetric bend - with a double line. Then, we connect the two lines/tails of each link, to make two bights. Then we connect one standing end of the one link to one standing end of the other link. We thus end up with a TIB double loop. ( Equivalently, we can also make the two loops in the reverse way, by connecting the two lines/standing parts of each link, and then form the TIB knot by connecting one line-tail of the one link to one line-tail of the other link.)
Ouaou...Many new possibilities emerge...I knew that the double midline loop chapter would be quite long...

https://igkt.net/sm/index.php?topic=3783.msg22136#msg22136
« Last Edit: June 05, 2021, 10:39:46 AM by tsik_lestat »
Going knots

tsik_lestat

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Re: Yet, another midline eyeknot
« Reply #50 on: June 06, 2021, 05:05:17 PM »
Getting back in the single loop inline concept, i'd like to include a TIB tying method of the midline, eight-like knot at reply#36, as i'm highly satisfied with its very stable, jam proof, BTL profile.

Things might be tricky with the eye loading profile,  especially with respect to the crossing knot Spart continuation, but it works properly when tri-axially loaded in anchor applications.(loading from the other Spart appears to be a more stable approach).

1. Form a crossing knot and a reversed S loop. The loop will be the final eye so it's good in this stage to adjust its size (first image).

2. Pass the rightmost SPart loop continuation under the crossing knot (second image).

3. Pass the loop (bight) through the crossing knot and under its continuation, in particular over, under, over, under (third image).

4. If you load the knot from the SParts, it will rather reshape to take the form of the fourth image, which is more preferable to me. I think the corresponding asymmetrical bend, will work too.
« Last Edit: June 06, 2021, 05:11:45 PM by tsik_lestat »
Going knots